From bab8e0b7b7a772f0c1af49606ebce5457ef76faf Mon Sep 17 00:00:00 2001
From: Marie Ramlow <me@nycode.dev>
Date: Wed, 25 Dec 2024 15:42:23 +0100
Subject: [PATCH] marie-nas: init

---
 hosts/marie-nas/configuration.nix |  19 ++++
 hosts/marie-nas/disko.nix         | 138 ++++++++++++++++++++++++++++++
 hosts/marie-nas/networking.nix    |  29 +++++++
 hosts/marie-nas/state.nix         |  32 +++++++
 hosts/marie-nas/zfs.nix           |   8 ++
 5 files changed, 226 insertions(+)
 create mode 100644 hosts/marie-nas/configuration.nix
 create mode 100644 hosts/marie-nas/disko.nix
 create mode 100644 hosts/marie-nas/networking.nix
 create mode 100644 hosts/marie-nas/state.nix
 create mode 100644 hosts/marie-nas/zfs.nix

diff --git a/hosts/marie-nas/configuration.nix b/hosts/marie-nas/configuration.nix
new file mode 100644
index 00000000..7eb56ece
--- /dev/null
+++ b/hosts/marie-nas/configuration.nix
@@ -0,0 +1,19 @@
+{ pkgs, ... }:
+{
+  imports = [
+    ./disko.nix
+    ./networking.nix
+    ./state.nix
+    ./zfs.nix
+  ];
+  boot = {
+    loader = {
+      systemd-boot = {
+        enable = true;
+        memtest86.enable = true;
+      };
+      efi.canTouchEfiVariables = true;
+    };
+    kernelPackages = pkgs.linuxPackages_6_12;
+  };
+}
diff --git a/hosts/marie-nas/disko.nix b/hosts/marie-nas/disko.nix
new file mode 100644
index 00000000..cb1ebe60
--- /dev/null
+++ b/hosts/marie-nas/disko.nix
@@ -0,0 +1,138 @@
+{
+  disko.devices = {
+    disk = {
+      root = {
+        type = "disk";
+        # device = "/dev/disk/by-id/nvme-Samsung_SSD_970_EVO_500GB_S466NB0K428706Z";
+        device = "/dev/disk/by-id/"; # TODO: change device
+        content = {
+          type = "gpt";
+          partitions = {
+            esp = {
+              size = "2G";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "umask=0077" ];
+              };
+            };
+            swap = {
+              size = "16G";
+              content = {
+                type = "swap";
+                randomEncryption = true;
+              };
+            };
+            luks = {
+              size = "100%";
+              content = {
+                type = "luks";
+                name = "root";
+                settings = {
+                  allowDiscards = true;
+                  keyFile = "/mnt/encryption-keys/root.key";
+                };
+                content = {
+                  type = "zfs";
+                  pool = "zroot";
+                };
+              };
+            };
+          };
+        };
+      };
+      wd-red-plus-a = {
+        type = "disk";
+        device = "/dev/disk/by-id/"; # TODO: add disk
+        content = {
+          type = "luks";
+          name = "wd-red-plus-a";
+          settings = {
+            allowDiscards = true;
+            keyFile = "/mnt/encryption-keys/wd-red-plus-a.key";
+          };
+          content = {
+            type = "zfs";
+            pool = "tank";
+          };
+        };
+      };
+      wd-red-plus-b = {
+        type = "disk";
+        device = "/dev/disk/by-id/"; # TODO: add disk
+        content = {
+          type = "luks";
+          name = "wd-red-plus-b";
+          settings = {
+            allowDiscards = true;
+            keyFile = "/mnt/encryption-keys/wd-red-plus-b.key";
+          };
+          content = {
+            type = "zfs";
+            pool = "tank";
+          };
+        };
+      };
+    };
+    zpool =
+      let
+        options = {
+          acltype = "posixacl";
+          compression = "zstd";
+          mountpoint = "none";
+          xattr = "sa";
+          dnodesize = "auto";
+          atime = "off";
+        };
+      in
+      {
+        zroot = {
+          type = "zpool";
+          rootFsOptions = options;
+          options.ashift = "12";
+          postCreateHook = "zfs list -t snapshot -H -o name | grep -E '^zroot/local/root@blank$' || zfs snapshot zroot/local/root@blank";
+
+          datasets = {
+            "local/nix" = {
+              type = "zfs_fs";
+              mountpoint = "/nix";
+            };
+            "local/root" = {
+              type = "zfs_fs";
+              mountpoint = "/";
+            };
+            "data/state" = {
+              type = "zfs_fs";
+              mountpoint = "/state";
+            };
+          };
+        };
+        tank = {
+          type = "zpool";
+          mode = "mirror";
+          rootFsOptions = options;
+          options.ashift = "12";
+
+          datasets = {
+            "data/shares" = {
+              type = "zfs_fs";
+              mountpoint = "/srv/shares";
+            };
+            "data/shares/media" = {
+              type = "zfs_fs";
+              mountpoint = "/srv/shares/media";
+              options = {
+                recordsize = "1M";
+              };
+            };
+            "data/shares/marie" = {
+              type = "zfs_fs";
+              mountpoint = "/srv/shares/marie";
+            };
+          };
+        };
+      };
+  };
+}
diff --git a/hosts/marie-nas/networking.nix b/hosts/marie-nas/networking.nix
new file mode 100644
index 00000000..5defa7b0
--- /dev/null
+++ b/hosts/marie-nas/networking.nix
@@ -0,0 +1,29 @@
+{ ... }:
+{
+  networking = {
+    hostName = "marie-nas";
+    useDHCP = false;
+    nftables.enable = true;
+  };
+  systemd.network = {
+    enable = true;
+    networks = {
+      ethernet = {
+        matchConfig = {
+          Type = [ "ether" ];
+          Kind = [ "!veth" ];
+        };
+        networkConfig = {
+          DHCP = "ipv4";
+          IPv6AcceptRA = true;
+          KeepConfiguration = "yes";
+        };
+      };
+    };
+  };
+
+  services.tailscale = {
+    enable = true;
+    useRoutingFeatures = "both";
+  };
+}
diff --git a/hosts/marie-nas/state.nix b/hosts/marie-nas/state.nix
new file mode 100644
index 00000000..b77f4ca0
--- /dev/null
+++ b/hosts/marie-nas/state.nix
@@ -0,0 +1,32 @@
+{ ... }:
+{
+  users.mutableUsers = false;
+  preservation = {
+    enable = true;
+    preserveAt."/state" = {
+      directories = [
+        "/etc/NIXOS"
+        { directory = "/home/marie"; user = "marie"; group = "users"; }
+        "/var/db/sudo"
+        { directory =  "/var/lib/nixos"; inInitrd = true; }
+        "/var/lib/systemd"
+        "/var/lib/tailscale"
+        "/var/log"
+      ];
+      files = [
+        { file = "/etc/machine-id"; inInitrd = true; how = "symlink"; configureParent = true; }
+        { file = "/etc/ssh/ssh_host_ed25519_key"; mode = "0700"; inInitrd = true; }
+        { file = "/etc/ssh/ssh_host_ed25519_key.pub"; inInitrd = true; }
+        { file = "/etc/ssh/ssh_host_rsa_key"; mode = "0700"; inInitrd = true; }
+        { file = "/etc/ssh/ssh_host_rsa_key.pub"; inInitrd = true; }
+      ];
+    };
+  };
+
+  systemd.suppressedSystemUnits = [ "systemd-machine-id-commit.service" ];
+
+  systemd.services.systemd-machine-id-commit = {
+    unitConfig.ConditionPathIsMountPoint = [ "" "/state/etc/machine-id" ];
+    serviceConfig.ExecStart = [ "" "systemd-machine-id-setup --commit --root /state" ];
+  };
+}
diff --git a/hosts/marie-nas/zfs.nix b/hosts/marie-nas/zfs.nix
new file mode 100644
index 00000000..a9ba216d
--- /dev/null
+++ b/hosts/marie-nas/zfs.nix
@@ -0,0 +1,8 @@
+{ ... }:
+{
+  networking.hostId = "450afd45";
+  boot = {
+    supportedFilesystems.zfs = true;
+    zfs.forceImportRoot = false;
+  };
+}